CVE-2026-66415 Leantime Server-Side Request Forgery and Local File Inclusion in Blueprints::import()
Authenticated attackers can exploit SSRF and LFI in Leantime to read internal resources and arbitrary files via unsanitized input in the import method.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-66415?
CVE-2026-66415 is a high-severity server-side request forgery vulnerability in Leantime, published on 30 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Leantime 3.6.2 contains a server-side request forgery and local file inclusion vulnerability that allows authenticated attackers to read internal resources by passing unsanitized user-supplied filenames to file_get_contents() in the Blueprints::import() method without path validation. Attackers can submit crafted filenames containing URL wrappers or path traversal sequences through the JSON-RPC API endpoint to access cloud metadata services or read arbitrary files from the server filesystem.
Weakness: CWE-918
Which versions are affected by CVE-2026-66415?
How do I fix CVE-2026-66415?
No fix has been published for CVE-2026-66415 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-66415 being exploited?
There is no known exploitation of CVE-2026-66415 in the wild and no public exploit code.
Sources
Also known as GHSA-gphg-6h4g-mg22, GHSA-rfxf-9pcf-q3rq.